CN114534830A - Bran discharging mechanism and milling equipment - Google Patents
Bran discharging mechanism and milling equipment Download PDFInfo
- Publication number
- CN114534830A CN114534830A CN202011329746.9A CN202011329746A CN114534830A CN 114534830 A CN114534830 A CN 114534830A CN 202011329746 A CN202011329746 A CN 202011329746A CN 114534830 A CN114534830 A CN 114534830A
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- bran
- separation body
- guide plate
- wall
- discharging mechanism
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- 238000007599 discharging Methods 0.000 title claims abstract description 77
- 230000007246 mechanism Effects 0.000 title claims abstract description 57
- 238000003801 milling Methods 0.000 title claims abstract description 36
- 238000000926 separation method Methods 0.000 claims abstract description 95
- 230000002087 whitening effect Effects 0.000 claims description 24
- 238000000227 grinding Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 241000209094 Oryza Species 0.000 description 35
- 235000007164 Oryza sativa Nutrition 0.000 description 35
- 235000009566 rice Nutrition 0.000 description 35
- 235000013339 cereals Nutrition 0.000 description 34
- 235000021329 brown rice Nutrition 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
- B02B7/00—Auxiliary devices
- B02B7/02—Feeding or discharging devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
- B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
- B07B4/04—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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- Adjustment And Processing Of Grains (AREA)
Abstract
The invention provides a bran discharging mechanism and milling equipment, belonging to the field of grain processing machinery, comprising: the separation body is arranged at the bottom of the discharge port and used for receiving the milled grains and the bran; the bran outlet pipe is arranged on the side surface of the separation body, is communicated with the separation body and is used for collecting bran; and a negative pressure generater, the setting is in the chaff outlet pipe, a chaff production suction for generating the negative pressure in to the separation body, make the chaff get into the chaff outlet pipe, wherein, separation body inside has a plurality of guide plates, a plurality of guide plates are crisscross the setting in proper order on the both sides inner wall of separation body along the length direction of separation body, grain flows out from the separation body bottom after each guide plate in proper order, every guide plate is extended to the direction slope of keeping away from the discharge gate by the inner wall that corresponds, one side that keeps away from the discharge gate from the guide plate that the discharge gate is farthest on the inner wall of separation body is equipped with out the chaff mouth, it is located at a chaff mouth to go out chaff pipe fixed connection.
Description
Technical Field
The invention belongs to the field of grain processing machinery, and particularly relates to a bran discharging mechanism and milling equipment.
Background
A milling apparatus is an apparatus for milling large particulate matter into small particulate matter. For example, a rice mill is a common milling device, which is used to peel brown rice to form polished rice.
The conventional rice mill usually adopts an extrusion principle, which easily causes rice grains to be broken. In order to reduce the breaking of rice grains, some prior art devices for peeling by belt grinding have appeared. The grinding equipment adopting the abrasive belt comprises a frame, a feeding device, a discharging device, a main roller, the abrasive belt sleeved on the main roller and a whitening chamber surrounding the main roller. The unpolished rice is milled to produce polished rice and bran, the polished rice and the bran flowing out of the milling chamber are mixed together, and the polished rice and the bran need to be separated by a bran discharging mechanism.
In the prior art, the bran discharging mechanism comprises a wind spraying air net, a bran discharging chamber, a bran discharging fan and the like. The bran discharging chamber is arranged below the whitening chamber, the bran discharging fan is arranged at a bran outlet of the bran discharging chamber, rice bran in the whitening chamber is discharged out of the whitening chamber under the action of the air spraying air net, and finally enters the bran discharging pipe from the bran outlet to be sucked away, but the existing device is low in bran discharging hole efficiency, the bran discharging of the bran discharging chamber is not thorough, and the collecting device is troublesome to replace.
Disclosure of Invention
In order to solve the problems, the invention provides a bran discharging mechanism and a milling device which have high bran discharging efficiency and better bran discharging effect, and adopts the following technical scheme:
the invention provides a bran discharging mechanism which is arranged in grinding equipment, wherein the grinding equipment is used for grinding grains to obtain grains and bran, is provided with a discharge hole for collecting the ground grains and bran, and is characterized by comprising the following components: the separation body is arranged at the bottom of the discharge port and used for receiving the milled grains and the bran; the bran outlet pipe is arranged on the side surface of the separation body, is communicated with the separation body and is used for collecting bran; and a negative pressure generater, the setting is in the chaff outlet pipe, a chaff production suction for generating the negative pressure in to the separation body, make the chaff get into the chaff outlet pipe, wherein, separation body inside has a plurality of guide plates, a plurality of guide plates are crisscross the setting in proper order on the both sides inner wall of separation body along the length direction of separation body, grain flows out from the separation body bottom after each guide plate in proper order, every guide plate is extended to the direction slope of keeping away from the discharge gate by the inner wall that corresponds, one side that keeps away from the discharge gate from the guide plate that the discharge gate is farthest on the inner wall of separation body is equipped with out the chaff mouth, it is located at a chaff mouth to go out chaff pipe fixed connection.
The bran discharging mechanism provided by the invention can also have the following characteristics, wherein the bran discharging mechanism further comprises: the air speed sensor is arranged on one side of the bran outlet, which is far away from the discharge hole, and is used for detecting the air speed near the bran outlet; the air speed regulating valve is arranged in the bran outlet pipe, is positioned between the negative pressure generator and the bran outlet and is used for regulating the air speed of the bran outlet; and the control module is electrically connected with the wind speed sensor and the wind speed regulating valve and is used for controlling the opening degree of the wind speed regulating valve according to the wind speed detected by the wind speed sensor so as to control the wind speed of the bran outlet.
The bran discharging mechanism provided by the invention can also be characterized in that the wind speed sensor is a wind speed transmitter, one end of the wind speed transmitter is inserted into the separation body, the other end of the wind speed transmitter is positioned outside the separation body, the wind speed regulating valve is an electric ventilation butterfly valve, and the negative pressure generating device is a negative pressure fan.
The bran discharging mechanism provided by the invention can also have the characteristic that the central line between the two side inner walls of the guide plate arranged on the separating body is the central line of the separating body, the guide plate closest to the discharge port extends from the inner wall of the corresponding separating body and does not cross the central line of the separating body, and all the guide plates except the guide plate closest to the discharge port extend from the inner wall of the corresponding separating body to cross the central line of the separating body.
The bran discharging mechanism provided by the invention can also have the characteristic that the plurality of guide plates comprise a first guide plate, a second guide plate, a third guide plate and a fourth guide plate which are sequentially arranged from the position, close to the discharge port, of the separation body in a staggered manner along the length direction of the separation body, the separation body is provided with a first inner wall and a second inner wall which are oppositely arranged, the first guide plate and the third guide plate are fixedly connected onto the first inner wall, and the second guide plate and the fourth guide plate are fixedly connected onto the second inner wall.
The bran discharging mechanism provided by the invention can also be characterized in that the distance between the tail end of the second guide plate and the first inner wall is H1, the distance between the tail end of the third guide plate and the first inner wall is H2, the distance between the tail end of the fourth guide plate and the first inner wall is H3, the distance between the tail end of the fourth guide plate and the bottom of the bran outlet in the vertical direction is H4, H1< H2< H3, and H4>20 mm.
The bran discharging mechanism provided by the invention can also have the characteristics that the included angle between the first guide plate and the first inner wall is 45 degrees, the included angle between the second guide plate and the second inner wall is 55 degrees, the included angle between the third guide plate and the first inner wall is 52.5 degrees, and the included angle between the fourth guide plate and the second inner wall is 50 degrees.
The bran discharging mechanism provided by the invention can also have the following characteristics, wherein the bran discharging mechanism further comprises: go out the grain pipe, fixed connection is linked together with the separation body in the one end that the discharge gate was kept away from to the separation body for collect the grain that drops from the separation body, the connector sets up between discharge gate and separation body, is used for communicateing discharge gate and separation body, and the discharge gate is located first guide plate directly over.
The bran discharging mechanism provided by the invention can also have the characteristic that the separation body is connected with the bran discharging pipe and the connector through welding.
The invention provides a milling apparatus, characterised in that it comprises: the grain mill comprises a vertically arranged main roller, a vertically arranged tensioning roller, an abrasive belt arranged on the outer sides of the main roller and the tensioning roller, a plurality of whitening chambers uniformly distributed around the main roller and a bran discharging mechanism arranged at the discharge outlet of the whitening chambers, wherein the abrasive belt protection device is the abrasive belt protection device, and the plurality of whitening chambers are close to the outer surface of the abrasive belt and are matched with the abrasive belt to mill grains to obtain grains and bran.
Action and Effect of the invention
According to the bran discharging mechanism and the milling equipment, the bottom of the whitening chamber is connected with the separation body, a plurality of guide plates connected to the inner wall of the separation body are distributed in the separation body in a staggered mode, and milled grains flow out of the bottom of the separation body and are collected after being guided by the guide plates in sequence. The side surface of the separation body is communicated with the bran discharge pipe for bran discharge, the bran discharge pipe is internally provided with the negative pressure generator, the negative pressure is generated to generate suction force on bran falling in the separation body, and the bran is lighter relative to grains, so that the bran can be sucked into the bran discharge pipe under proper negative pressure air and is discharged from the bran discharge pipe. According to the bran discharging mechanism disclosed by the invention, the grains vertically fall after being milled and flow along the guide plate, so that the bran discharging mechanism is favorable for accelerating the separation of the bran adhered to the surfaces of the grains and is favorable for sucking the bran away by negative pressure air.
Drawings
FIG. 1 is a schematic view of the structure of a milling apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the main drum, the tension drum and the abrasive belt in an embodiment of the invention;
figure 3 is a top sectional view of a milling apparatus in an embodiment of the invention;
FIG. 4 is a schematic view of the whitening chamber in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a bran discharging mechanism in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a separation body in an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.
< example >
Fig. 1 is a schematic structural view of a milling apparatus in an embodiment of the present invention. Fig. 2 is a schematic view of the structure of the main drum, the tension drum and the abrasive belt in the embodiment of the present invention.
As shown in fig. 1 and 2, the present embodiment provides a milling apparatus 100 for milling grains, which includes a frame 10, a main roller 20, a tension roller 30, a sanding belt 40, a feeding mechanism 50, a whitening chamber 60, and a bran discharging mechanism 70. In this embodiment, the milled cereal is brown rice, and the milling apparatus 100 is a rice mill for milling the brown rice to form polished rice, and the milling of the brown rice will be described in detail.
The frame 10 has a base 11, a cabinet 12, 2 columns 13, and a bran discharge mechanism mounting portion 14.
The base 11 is placed subaerial, is the rectangle, and its ground four corners is equipped with 4 pillars that are used for supporting the base for other parts of installation base 11.
The cabinet 12 is a box structure, and is disposed at one side of the top surface of the base 11, and is used for installing a controller for controlling the milling apparatus 100, a power supply, a fan, a tension roller, and the like.
The bran discharging mechanism mounting part 14 is arranged at the top of the base 11 and is fixedly connected with the case 12. The cross section of the bran discharging mechanism mounting part 14 is arc-shaped, and the radian of the arc is larger than 180 degrees. The top of the bran discharging mechanism mounting part 14 is a mounting platform 141 parallel to the horizontal plane, and the mounting platform is connected with the upright column 13 and is vertical to the connecting plane.
The main drum 20 includes a main cylinder 21 and a main drum shaft 22.
The main cylinder 21 is cylindrical, extends in the vertical direction, has an end surface parallel to the horizontal plane, and is arranged at the top of the bran discharging mechanism mounting part 14. The main drum shaft 22 is inserted through the axis of the main drum 21, connected to a motor for driving the main drum 21 to rotate, and driven by the motor to drive the main drum 21 to rotate.
The tension drum 30 includes a tension cylinder 31 and a housing 32.
The tension cylinder 31 has a cylindrical shape, a diameter smaller than that of the main cylinder 21, and an end surface parallel to the end surface of the main cylinder 21 of the main drum 20. The housing 32 is rotatably connected to the tensioning cylinder 31, i.e. the housing 32 does not follow the rotation when the tensioning cylinder 31 is rotated. The cover 32 forms a half-enclosed structure with respect to the tension cylinder 31, specifically, the cover 32 covers a part of the side surface of the tension cylinder 31, but the inner side surface of the cover 32 close to the tension cylinder 31 does not come into contact with the tension cylinder 31 when the tension cylinder 31 rotates. The specific area of the cover 32 covering the tension cylinder 31 can be set according to specific requirements, and it is preferable that the contact area between the abrasive belt 40 and the tension cylinder 31 is not reduced. In the present embodiment, the cover 32 covers 50% of the side surface of the tension cylinder 31 near the main drum 20.
The 2 columns are axisymmetrical with respect to a line connecting the center of the main cylinder 21 and the center of the tension cylinder 31.
The abrasive belt 40 is sleeved outside the main cylinder 21 of the main roller 20 and the tension cylinder 31 of the tension roller 30 to form a complete abrasive roller structure. The area where the sanding belt 40 surrounds the cylinder 21 and the tensioning roller 30 is formed inside the sanding belt 40 and, conversely, outside the sanding belt 40. The coated belt 40 is a rough surface for grinding in contact with the brown rice.
The feeding mechanism 50 is provided at the top of the main drum 11, and the brown rice to be milled is introduced into the milling apparatus 100 from the feeding device to be milled. In this embodiment, the feeding mechanism 50 is provided with 12 feeding paths.
Figure 3 is a top sectional view of a milling apparatus in an embodiment of the invention. Fig. 4 is a schematic view of the whitening chamber in an embodiment of the present invention.
As shown in fig. 3 and 4, a plurality of whitening chambers 60 are formed on the outer side of the sanding belt 40 on the circumferential surface of the main cylinder 11 and are uniformly arranged along the circumferential direction and close to the sanding belt 40. A gap is formed between two adjacent whitening chambers 60. In this embodiment, the periphery of the sanding belt 40 is provided with 12 whitening chambers 60 corresponding to the 12 feed passages.
The top end of the whitening chamber 60 is communicated with the feeding mechanism 50, and the bottom end is fixedly arranged on the mounting platform 141.
The whitening chamber 60 has a rice milling chamber 61, a rice outlet passage 62, a feed port 63, a discharge port 64, and a housing 65.
The rice milling chamber 61 is a passage extending in the vertical direction and has three plates connected in sequence, the cross section of the structure formed by the three plates is trapezoidal, and the bottom of the trapezoid is an opening facing the abrasive belt 40.
The rice outlet channel 62 is arranged at the bottom of the rice milling cavity 61, is communicated with the rice milling cavity 61 and is obliquely arranged relative to the rice milling cavity 61, namely, the rice outlet channel 62 and the rice milling cavity 61 form an included angle with each other, and the included angle is an obtuse angle, so that polished rice obtained after milling flows along the oblique direction of the rice outlet channel 62.
The feed port 63 is arranged at the top of the rice milling chamber 61 and communicated with the rice milling chamber 61 and the feed passage of the feed device 50, and the discharge port 64 is arranged at the bottom of the rice outlet channel 62 and communicated with the rice milling chamber 61 through the rice outlet channel.
The housing 65 covers the milling chamber 61 from the side thereof remote from the abrasive belt 40.
The bran discharging mechanism 70 is disposed in the bran discharging mechanism mounting part 14 of the frame 10 at the bottom of the whitening chamber 60.
Fig. 5 is a schematic structural diagram of a bran discharging mechanism in the embodiment of the invention. Fig. 6 is a schematic structural diagram of a separation body in an embodiment of the present invention.
As shown in fig. 5 and 6, the bran discharging mechanism 70 has a connector 71, a separating body 72, a grain outlet pipe 73, a bran outlet pipe 74, a negative pressure generator, an air velocity sensor 76, an air velocity adjusting valve 77, and a control module.
The cross section of the connector 71 is trapezoidal, the lower bottom of the trapezoid faces the ground and is communicated with the top of the separation body 72, and the upper bottom of the trapezoid of the connector 71 is communicated with the discharge hole 64 of the rice chamber 60. The connector 71 is sealed with the discharging hole 64 of the rice chamber 60. The trapezoidal side surfaces of the connector 71 are two side walls, one of which extends in the vertical direction and the other of which is disposed obliquely.
The bottom of the connector 71 is shaped to fit the top of the separation body 72, and is connected to the separation body 72 by welding, with the insides of the two communicating.
The separation body 72 has a plurality of baffles, which are a first baffle 721, a second baffle 722, a third baffle 723, and a fourth baffle 724 in sequence from top to bottom. The separating body 72 has a first inner wall 725 and a second inner wall 726, which are opposite to each other, wherein the first inner wall 725 corresponds to one side wall of the vertically extending connector 71, and the second inner wall 726 corresponds to the other side wall of the connector 71, which is inclined.
As shown in fig. 6, the centerline between the first inner wall 725 and the second inner wall 726 is the separation body centerline X-X.
The plurality of baffles are sequentially arranged on the inner walls of the two sides of the separation body 72 in a staggered manner along the length direction (vertical direction) of the separation body 72, and each baffle extends obliquely from the inner wall of the corresponding separation body 72 to a direction away from the discharge hole 64. The end of each baffle remote from the inner wall of its respective separator body 72 is its free end.
Specifically, one end of the first flow guiding plate 721 is fixedly connected to the first inner wall 725, and the other end extends obliquely in a direction away from the discharge hole 64. The discharge hole 64 is located right above the first flow guiding plate 721, and an acute included angle between the first flow guiding plate 721 and the first inner wall 725 is α, in this embodiment, the included angle α is 45 °. The free end of the first baffle 721 does not cross the separation body centerline X-X.
One end of the second guiding plate 722 is fixedly connected to the second inner wall 726, and the other end extends obliquely to the direction far away from the discharging hole 64. The acute included angle between the second flow guiding plate 722 and the second inner wall 726 is β, and in this embodiment, the included angle β is 55 °. The free end of the second deflector 722 crosses the separation body centerline X-X and the vertical distance between the free end of the second deflector 722 and the first inner wall 725 is H1.
One end of the third guiding plate 723 is fixedly connected to the first inner wall 725, and the other end extends in a direction away from the discharge hole 64 in an inclined manner. The acute included angle between the third guiding plate 723 and the first inner wall 725 is γ, and in this embodiment, the included angle γ is 52.5 °. The free end of the third deflector 723 passes beyond the separation body centerline X-X and the vertical distance between the free end of the third deflector 723 and the second inner wall 726 is H2.
One end of the fourth baffle 724 is fixedly connected to the second inner wall 726, and the other end extends obliquely in a direction away from the discharge hole 64. An acute included angle δ is formed between the fourth guiding plate 724 and the second inner wall 726, and in this embodiment, the included angle δ is 50 °. The free end of the fourth baffle 724 crosses the separation body centerline X-X and the free end of the fourth baffle 724 is at a vertical distance H3 from the first inner wall 725.
In the present embodiment, the relationship among H1, H2, and H3 satisfies H1< H2< H3. The milled fine rice firstly slides to the first guide plate 721 from the discharge port 64, then sequentially slides to the second guide plate 722, the third guide plate 723 and the fourth guide plate 724 along the inclined direction of the guide plate 721, and finally is extracted from the bottom of the separation body 72.
The grain outlet pipe 73 is connected with one end of the separating body 72 far away from the discharge hole 64 through a bolt and is communicated with the separating body 72. The polished rice enters the discharging pipe 73 from the bottom opening of the separation body 72 after sliding from the fourth guide plate 724, and the polished rice is collected by the grain discharging pipe 73.
The second inner wall 726 of the separation body 72 is further provided with a bran outlet 727. The bran outlet 727 is located at the bottom of the connecting part of the fourth baffle 724 and the second inner wall 726, that is, the fourth baffle 724 is far away from one side of the discharge hole 64. The distance between the bottom end of the bran outlet 727 and the fourth guide plate 724 in the vertical direction is H4, in this embodiment, H4 is more than 20 mm. The top end of the bran outlet 727 is not overlapped with the connecting part of the fourth guide plate 724 and the second inner wall 726.
The bran outlet pipe 74 is connected to the bran outlet 727 of the separation body 72 and is communicated with the inside of the separation body 72. The bran outlet pipe 74 is formed by sequentially connecting a plurality of connecting sections, and the plurality of connecting sections comprise a first connecting section 741, a second connecting section 742 and a third connecting section 743 which are sequentially communicated.
The first connecting section 741 is connected to the bran outlet 727 of the separating body 72, and an axis of the first connecting section 741 is not perpendicular to the central line X-X of the separating body, that is, the first connecting section 741 is disposed obliquely to the separating body 72 to a side away from the discharge port 64. The second connection section 742 is connected to the first connection section 741, and the third connection section 743 is connected to the second connection section 742 and is respectively located on two side surfaces adjacent to the second connection section 742. The axis of the third connecting section 743 is perpendicular to the axis of the first connecting section 741.
The negative pressure generator is arranged in the bran outlet pipe 74 and is used for generating negative pressure to enable bran in the separation body 72 to enter the bran outlet pipe 74. In this embodiment, the negative pressure generator is a negative pressure fan, and generates negative pressure air to suck bran in the separation body 72, and then the bran is discharged and collected from an outlet (a port on a side far from the bran outlet on the separation body 72) of the bran discharge pipe 74.
The wind speed sensor 76 is arranged on one side of the bran outlet 727 far away from the discharge hole and is used for detecting the wind speed near the bran outlet 727. In this embodiment, the wind speed sensor 76 is a wind speed transducer and is electrically connected to the control module. One end of the wind speed transducer is inserted into the separation body 72 from the outside of the separation body 72 through the second inner wall 726 of the separation body 72.
The wind speed adjusting valve 77 is disposed in the bran discharging pipe 74 between the negative pressure generator and the bran outlet 727, in this embodiment, the wind speed adjusting valve 77 is connected to an end of the third connecting section 743 far away from the second connecting section 742, and is configured to adjust a wind speed in the bran discharging pipe 74, which is equivalent to adjust a wind speed at the bran outlet.
In this embodiment, the wind speed adjusting valve 77 is an electric ventilation butterfly valve and is electrically connected to the control module. The control module receives the wind speed near the bran outlet 727 detected by the wind speed transmitter, and controls the opening size of the electric ventilation butterfly valve according to the wind speed so as to control the wind speed of the bran outlet.
Examples effects and effects
The row's chaff mechanism and the equipment of milling that this embodiment provided, the whitening chamber bottom is connected with the separation body, and the inside staggered distribution of this separation body has a plurality of guide plates of connection on the separation body inner wall, and cereal after milling is in proper order after the water conservancy diversion of each guide plate, flows and is collected from separation body bottom. The side surface of the separation body is communicated with the bran discharging pipe to be used for discharging bran, the bran discharging pipe is internally provided with a negative pressure generator, suction force is generated on falling bran in the separation body through the generated negative pressure, and the bran is lighter relative to grains, so that the bran can be sucked into the bran discharging pipe under proper negative pressure air and is discharged from the bran discharging pipe. The bran discharging mechanism of the embodiment has the advantages that the grains vertically fall after being milled and flow along the guide plate, so that the bran discharging mechanism is favorable for accelerating the separation of bran adhered to the surfaces of the grains and is favorable for the absorption of the bran by negative pressure air.
According to the bran discharging mechanism provided by the embodiment, the wind speed sensor is arranged near the bran outlet in the separation body to measure the wind speed near the bran outlet, the wind speed adjusting valve is arranged in the bran outlet pipe, and the control module adjusts the opening size of the wind speed adjusting valve according to the measured wind speed near the bran outlet, so that the wind speed near the bran outlet is controlled by a person, and bran is sucked away to the maximum extent on the premise that grains are not sucked away.
According to the bran discharging mechanism provided by the embodiment, the distance H1 between the second guide plate and the first inner wall is smaller than the distance H2 between the third guide plate and the second inner wall, the distance H2 between the third guide plate and the second inner wall is smaller than the distance H3 between the fourth guide plate and the first inner wall, H1< H2< H3, so that material blockage can be prevented, and accumulation and blockage in a separation body in the falling process of grains are avoided.
The row's chaff mechanism that this embodiment provided, the distance of outlet bottom and fourth guide plate free end (end) on vertical direction is H4 to H4>20mm, negative pressure wind in the outlet pipe can not direct action and cereal like this, realizes under the prerequisite of not siphoning away cereal, improvement negative pressure that can furthest, produces bigger suction to the chaff, arranges the chaff more thoroughly.
The bran discharging mechanism provided by the embodiment has the advantages that the included angle alpha between the first inner walls of the first guide plates is 45 degrees, the included angle beta between the second guide plates and the second inner walls is 55 degrees, the included angle gamma between the third guide plates and the first inner walls is 52.5 degrees, the included angle delta between the fourth guide plates and the second inner walls is 50 degrees, the angle of alpha is smaller, the grain falling speed is favorably improved, and the falling impact is larger. The angles of beta, gamma and delta are sequentially reduced, so that the grain is slowly and rapidly dropped, and the dropping process is prolonged while material blockage is avoided. The falling process of the grains is prolonged, so that the time for sucking the bran by negative pressure wind can be prolonged, and the bran discharging is more thorough.
The bran discharging mechanism provided by the embodiment is a secondary bran discharging mechanism, and grain is milled in the whitening chamber, so that bran can be driven by the abrasive belt to be separated from the whitening chamber, and is sucked away by negative pressure air beside the whitening chamber to form primary bran discharging. The rice can be ensured to be cleaner by performing secondary bran discharging, the production precision and the yield of the next rice machine are improved, and the resolution of the color sorter is improved.
The above-described embodiments are merely illustrative of specific embodiments of the present invention, and the present invention is not limited to the description of the above-described embodiments.
Claims (10)
1. A bran discharging mechanism is installed in a grinding device, the grinding device is used for grinding grains to obtain grains and bran, a discharge port for collecting the grains and the bran after grinding is arranged, and the bran discharging mechanism is characterized by comprising:
the separation body is arranged at the bottom of the discharge hole and used for receiving the milled grains and the bran;
the bran outlet pipe is arranged on the side surface of the separation body, is communicated with the separation body and is used for collecting the bran; and
the negative pressure generator is arranged in the bran outlet pipe and used for generating negative pressure to generate suction force on the bran in the separation body so that the bran enters the bran outlet pipe,
wherein the separation body is internally provided with a plurality of guide plates,
the guide plates are sequentially arranged on the inner walls of the two sides of the separation body in a staggered manner along the length direction of the separation body, the grains sequentially pass through the guide plates and then flow out from the bottom of the separation body,
each guide plate extends from the corresponding inner wall to the direction far away from the discharge hole in an inclined way,
the inner wall of the separation body is provided with a bran outlet at one side, which is farthest from the discharge hole, of the guide plate, and the bran outlet pipe is fixedly connected to the bran outlet.
2. A bran discharging mechanism as claimed in claim 1, further comprising:
the air speed sensor is arranged on one side of the bran outlet, which is far away from the discharge hole, and is used for detecting the air speed near the bran outlet;
the air speed regulating valve is arranged in the bran outlet pipe, is positioned between the negative pressure generator and the bran outlet and is used for regulating the air speed of the bran outlet;
and the control module is electrically connected with the wind speed sensor and the wind speed regulating valve and used for controlling the opening degree of the wind speed regulating valve according to the wind speed detected by the wind speed sensor so as to control the wind speed of the bran outlet.
3. A bran discharging mechanism as claimed in claim 2, wherein:
wherein the wind speed sensor is a wind speed transmitter,
one end of the wind speed transmitter is inserted in the separation body, the other end is positioned at the outer side of the separation body,
the wind speed regulating valve is an electric ventilation butterfly valve,
the negative pressure generating device is a negative pressure fan.
4. A bran discharging mechanism as claimed in claim 1, wherein:
wherein the central line between the inner walls of the two sides of the separation body provided with the guide plate is the central line of the separation body,
the guide plate closest to the discharge hole extends from the inner wall of the corresponding separation body and does not cross the center line of the separation body,
all the guide plates except the guide plate closest to the discharge hole extend from the inner wall of the corresponding separation body to cross the center line of the separation body.
5. A bran discharging mechanism as claimed in claim 1, wherein:
wherein the guide plates comprise a first guide plate, a second guide plate, a third guide plate and a fourth guide plate which are sequentially arranged in a staggered manner along the length direction of the separation body from the position of the separation body close to the discharge hole,
the separating body is provided with a first inner wall and a second inner wall which are oppositely arranged,
the first guide plate and the third guide plate are fixedly connected on the first inner wall,
the second guide plate and the fourth guide plate are fixedly connected to the second inner wall.
6. A bran discharging mechanism as claimed in claim 5, wherein:
wherein a distance between an end of the second baffle and the first inner wall is H1,
the distance between the end of the third baffle and the first inner wall is H2,
the distance between the end of the fourth baffle and the first inner wall is H3,
the distance between the tail end of the fourth guide plate and the bottom of the bran outlet in the vertical direction is H4,
h1< H2< H3, and H4>20 mm.
7. A bran discharging mechanism as claimed in claim 5, wherein:
wherein the included angle between the first guide plate and the first inner wall is 45 degrees,
the included angle between the second guide plate and the second inner wall is 55 degrees,
the included angle between the third guide plate and the first inner wall is 52.5 degrees,
the fourth guide plate and the included angle between the second inner wall is 50 degrees.
8. A bran discharging mechanism as claimed in claim 5, further comprising:
a grain outlet pipe fixedly connected with one end of the separation body far away from the discharge hole, communicated with the separation body and used for collecting the grains falling from the separation body,
a connector arranged between the discharge port and the separation body and used for communicating the discharge port with the separation body,
the discharge hole is positioned right above the first guide plate.
9. A bran discharging mechanism as claimed in claim 8, further comprising:
wherein, the separation body is connected with the bran outlet pipe and the connector through welding.
10. A milling apparatus, comprising:
a main roller which is vertically arranged, a tensioning roller which is vertically arranged, abrasive belts which are arranged at the outer sides of the main roller and the tensioning roller, a plurality of whitening chambers which are uniformly distributed around the main roller and a bran discharging mechanism which is arranged at the discharge outlet of the whitening chambers,
wherein the belt protection is in accordance with any one of claims 1-9,
the plurality of whitening chambers are close to the outer surface of the abrasive belt and are matched with the abrasive belt to grind grains to obtain grains and bran coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011329746.9A CN114534830A (en) | 2020-11-24 | 2020-11-24 | Bran discharging mechanism and milling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011329746.9A CN114534830A (en) | 2020-11-24 | 2020-11-24 | Bran discharging mechanism and milling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114534830A true CN114534830A (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011329746.9A Pending CN114534830A (en) | 2020-11-24 | 2020-11-24 | Bran discharging mechanism and milling equipment |
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| CN (1) | CN114534830A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025838A (en) * | 2022-07-19 | 2022-09-09 | 深圳市麦稻科技有限公司 | Grain grinding equipment |
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| CN214439334U (en) * | 2020-11-24 | 2021-10-22 | 麦稻智慧粮食有限公司 | Bran discharging mechanism and milling equipment |
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| CN104907117A (en) * | 2015-06-16 | 2015-09-16 | 江西正米科技有限公司 | Vertical rice milling machine |
| CN209244902U (en) * | 2018-11-28 | 2019-08-13 | 华南农业大学 | A kind of pipeline high velocity air wind speed controller |
| CN210585076U (en) * | 2019-08-23 | 2020-05-22 | 四川省旭东机械制造有限公司 | Novel rice mill |
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| CN115025838A (en) * | 2022-07-19 | 2022-09-09 | 深圳市麦稻科技有限公司 | Grain grinding equipment |
| CN115025838B (en) * | 2022-07-19 | 2024-01-23 | 深圳市麦稻科技有限公司 | Cereal grinding equipment |
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